12 ANALYSIS OF THE NATURAL OliDERS. 



m Stamen 1, styles 2. Leaves opposite CALLITRI:IIACE.E lie 



m Stamens 2, styles 2. Leaves alternate, dissected.. PODOSTEMIACE^E. Ill 

 m Sta. 12-24, style 1. Lvs. verticillate, dissected.. CERATOPHYLI.ACE.E. 118 



n Fruit a double samara (2-winged) OiiDEh 'fi 



n Fruit a single samara (1-winged), or a drupe. Stamens 2 ORDER 101 



n Fruit not winged, 3-seeded. Stamens 4 EUPHORBIACE^. 113 



o 1-eccded. Stamens 4 or 8 ELEAGNACE^E. 112 



o 1-seeded. Stamens 3. Parasites.. LORANTUACE^E. 109 



p Anthers opening by valves. Calyx colored LAURACE^. 108 



p Anthers opening by slits. q Calyx colored. Stam. 8 TUYMELACE^E. Ill 



q Calyx greenish ; racemcd ORDETI 37 



q Cal. green ; spiked. S. Fla..CoMBKETACE^E. (50) 



r Ovary and seed only 1, in the juicy drupe. Trees ORDER 65 



r Ovaries 2 4, seed 1. Fruit a drupe or nut. Shrub*. . .SANTALACEJS. 110 



8 Stamens numerous ORDER 47 



g Stamens as many as the calyx lobes 1. URTICACEJE. 114 



t Leaves pinnate. Pistils 5, scarcely united ORDER 31 



t Leaves simple, linear, evergreen. Shrubs heath-like.. EMPETRACE^E. 119 

 t Leaves simple, expanded. Fls. 3-parted. Fruit dry.. EUPHORBIACE.E. 113 



t Leaves simple, expanded. Fls. 4- or 5-parted. Fruit fleshy ORDER 40 



v Nut drupaceous, naked. Leaves pinnate JUGLANDACE^E. 121 



v Nul or nuts in a cup or involucre. Leaves simple CUPULIFER.E. 122 



x Fruit fleshy, aggregated (sorosis). Juice (or sap) milky. .. 2. URTICACE^E. 114 

 X Fruit dry. Plants with a watery juice or sap. . (y) 



y Aments globular, racemed. Nutlets 2-celled, woolly ORDER 65 



y Aments globular, solitary. Nutlets 1-celled, 1-seeded PLATAXACE.E. 120 



y Aments cylindrical or oblong.. (z) 



z Ovary 2-celled, 2-ovuled, 1-seeded. Fruit oft en winged.. BETULACE^E. 123 



z Ovary 1-celled, 1-secdcd. Fruit often fleshy MYRICACEJE. 124 



z Ovary rnany-ovuled, many-seeded. Seeds comous SAJLICACE.E. 125 



D. COHORT 4. THE CONOIDS. 



* Leaves pinnate. Stem simple, palm-like. Sterile flowers in cones CYCADACE.E. 126 



* Leaves simple. Stem branching. Fertile flowers in cones CONIFEKJE. 127 



* Leaves simple. Stem branching. Fertile flowers solitary TAXACE^:. 128 



E. COHORT 5. THE SPADICEOUS ENDOGENS. 



Trees or shrubs with palmi-cleft leaves all from one terminal bud, I p ALMACM! 129 



and a branching " spadix" from a spathe.... ' " 



Herbs with simple, rarely ternate leaves. Spadix simple. .(2) 



2 Plants frond-like, minute, floating loose on the water LEMNACE.E. 131 



3 Plants with stem and leaves, rooting and fixed.. (3) 



3 Spadix evident, in a spathe or on a scape ARACE^. 130 



3 Spadix obscure or spike-like. Stems leafy.. (4) 



4 Flowers with no perianth, densely spicate or capitate TTPIIACE^E. 132 



4 Flowers with a perianth or not. Plants submersed NATAPACK= 133 



